If you’re looking for a plant that thrives in the conditions inside most homes, try the crown of thorns plant (Euphorbia milii). Growing the plant is easy because it adapts well to normal room temperatures and in dry indoor environments. It also forgives occasional missed waterings and feedings without complaint.
Crown of thorns has few serious pests. Mealybugs are the most common insect pest in the Midwest, but spider mites, scales and thrips may occur. Diseases generally are the result of too much water, either in the soil or on the foliage.
Crown of Thorns will survive temperatures as low as 35 degrees Fahrenheit without special care, according to the University of Wisconsin Cooperative Extension. They prefer warm, dry conditions with average daytime temperatures around 80 degrees Fahrenheit.
Bacterial leaf spot on crown of thorns causes unsightly lesions. They can become larger and merge, completely destroying leaf tissue and ultimately causing a plant to die. If you're seeing spots on your crown of thorns, know how to determine if it is leaf spot Read more
When put under stress, such as a lack of moisture, the plant may defoliate completely, but will produce new leaves when watered and new growth resumes. A Crown of Thorns will produce flowers nearly all year long, but especially during the winter months.
When a Crown of Thorns plant becomes stressed due to over watering or under watering, humidity or temperature changes, it may quickly drop all of its leaves. Normally, once the cause of stress is resolved, fresh foliage will quickly return to your plant.
If your plant gets too tall and leggy, you can prune it back by half its size in spring. This will cause it to branch out. New stems will grow from below where the pruning cuts were made, making this succulent bushy and full.
Euphorbia milii will do well in a well-drained, grainy potting substrate. This is paramount to ensure that the plant doesn't sit on damp soil for long. You can use about a third of pumice or perlite and mix it with two thirds of regular soil Read more
Mix two parts coarse sand and one part potting soil. Amend the mixture with a little well-rotted manure or compost. Pour part of the mixture into a container that is 1 inch larger in diameter than the current pot holding the crown of thorns and Read more
Rooting In Water Another method for propagating crown-of-thorns is to root the cutting in water. Simply take the cutting and place it in a tall, narrow glass with 1 inch of water in the bottom. Keep the cutting in bright, indirect sunlight and roots will Read more
The crown of thorns plant is reserved and less demanding when it comes to water. Its thick, spiny stems store water which keeps it hydrated for many days. Give it a thorough watering once a week and let the surface soil (about one inch deep) Read more
The only well-known predator of adult crown-of-thorns starfish was the Pacific triton, a giant sea snail that hunts by injecting venom. Dozens of coral fish had been identified as predators of the starfishes' sperm, very young starfish, or were observed dining on dead or almost-dead Read more
Tolerant of acidic and alkaline soil types, the key to crown of thorns' success remains a fast-draining soil with some fertility. A sandy soil with incorporated compost is ideal, but a loam works well if texture and looseness are increased by adding grit and some Read more
Its longevity has an inverse relationship with dropping temperatures, with Crazy Plants, Crazy Critters saying that temperatures below 50 degrees will cause stress to the plant. Missouri Botanical Garden takes it one step further, saying the crown of thorns will react poorly when temperatures drop Read more
Light. As with most flowering plants, the better the sun exposure, the more blooms you will get. However, crown of thorns will reliably bloom as long as it gets at least three to four hours of bright, direct sunlight per day. Outdoors, try to place Read more
The Crown of Thorns is at home in containers indoors or out and is an excellent choice for well-drained gardens and xeriscaping. Drought tolerant, salt tolerant, and deer resistant.
Planted correctly, the plant offers a mass of delicate blossoms all year round. Crown Of Thorns is great as an outdoor shrub in warm climates, as it is extremely tolerant of high temperatures. It even thrives in temperatures above 90º F. The plant can withstand Read more
As a desert plant, the crown of thorns doesn't need very much water to survive. Otherwise, leaves may start to yellow, and the plant can eventually die. In some cases, you may see your crown of thorns plant leaves turning yellow simply because they're not Read more
Although Crown of Thorns belongs to the species of succulents, it can only store a limited amount of water using its stems. The plant has evolved to also take in water through the leaves, so misting the plant on a daily basis may help. As Read more
Despite its somewhat off-putting name, crown of thorns (Euphorbia milii) is a very pretty succulent plant that can bloom almost year-round, even indoors. The thick, bright green leaves grow along the new stem growth.
All parts of the Crown-of-Thorns plant are poisonous. Generally this group of plants is not appetizing to most animals but they will eat it if their normal food supply becomes limited. Drying does not destroy the toxicity of the plant, and Euphorbia in hay may Read more
Ideally, the total mulch layer should be no more than 2 to 3 inches thick. If adequate mulch is present, no more needs to be added. Also, keep the mulch several inches back from the base of the shrubs to allow good air movement around Read more
Water crown-of-thorns regularly. A weekly schedule is not excessive if soil is permitted to dry to the depth of an inch between waterings. Overwatering can result in spongy stems, leaf loss and failure to bloom. In addition to testing soil for moisture, watch for leaf-droop Read more
Crown of Thorns plants are woody with sharp spines. They have dark green, tear-shaped leaves that appear primarily on new growth on thorn-covered branches. When put under stress, such as a lack of moisture, the plant may defoliate completely, but will produce new leaves when Read more
If you want to keep your crown of thorns low to the ground, cut back the branches while leaving the axillary buds and sprouts intact. ( In other words, you should remove the branches back to a lateral branch.
Plants can also be grown from seed, but plants rarely produce seed without hand pollination with different plants. Crown of thorns has few serious pests.
In colder climates, crown of thorns makes a good houseplant. Unfortunately, it can be impacted by a disease called bacterial leaf spot, caused by bacteria called Xanthomonas. Spotted crown of thorns plants may be suffering from this bacterial disease, but spots can also be caused Read more
Most crown of thorns don't require pruning until their second or third year, if at all, due to their slow growth rate. When pruning is required, the University of Florida IFAS Extension recommends pruning this plant during cool, dry weather to help prevent or lessen Read more
Despite its somewhat off-putting name, crown of thorns (Euphorbia milii) is a very pretty succulent plant that can bloom almost year-round, even indoors.
As a general rule, it works best to cut the stem at its point of origin to prevent stubby, unsightly branches. Prune a crown of thorns to remove weak, dead, or damaged growth or branches that rub or cross other branches.
As a succulent, the Crown of Thorns stores water in its thick stems. Just be aware that too much water encourages a profusion of green leaves without many flowers … or worse, it can bring rot or disease. The leaves curl if they need water, Read more
Curled leaves and dried brown edges are the result of too little water and over-exposure to the sun. Although Crown of Thorns can naturally do well in sun-filled locations, those that haven't acclimatised to the harsh rays will show signs of sun-scorch and environmental shock.
Basically, crown of thorns is treated like a cactus. Although it may be able to tolerate light frost, extended periods of cold below 35 F. (2 C.) will result in a frost-bitten crown of thorns plant.
Crown of Thorns Plant Propagation from Seed You can encourage your plant to produce seed by pollinating it by hand. Use a fine paintbrush and transfer pollen from one flower to another.
Basically, crown of thorns is treated like a cactus. Although it may be able to tolerate light frost, extended periods of cold below 35 F. (2 C.) will result in a frost-bitten crown of thorns plant. If your crown of thorns plant is in a Read more
Why Is My Crown Of Thorns Plant Losing Leaves? It's natural to lose leaves from the lower part of a stem, but leaf loss all over the plant is usually one of two things: Overwatering – The plant can handle excess water in the bright Read more
You should stick to watering your crown of thorns roughly once per week. Allow the soil to dry between waterings. In some cases, you may see your crown of thorns plant leaves turning yellow simply because they're not getting the nutrients that they need.
Crown of thorns are neglect-tolerant and require little maintenance. However, when caring for crown of thorns plants, it's essential to wear gloves, as the latex sap from this plant can cause eye and skin irritation.
Crown of thorns is only perennial in USDA Hardiness Zones 9, 10, and 11. In colder climates, it is often grown as a houseplant. If growing it outdoors, give the plant plenty of room.
Tolerant of acidic and alkaline soil types, the key to crown of thorns' success remains a fast-draining soil with some fertility.